1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * f2fs sysfs interface 4 * 5 * Copyright (c) 2012 Samsung Electronics Co., Ltd. 6 * http://www.samsung.com/ 7 * Copyright (c) 2017 Chao Yu <chao@kernel.org> 8 */ 9 #include <linux/compiler.h> 10 #include <linux/proc_fs.h> 11 #include <linux/f2fs_fs.h> 12 #include <linux/seq_file.h> 13 14 #include "f2fs.h" 15 #include "segment.h" 16 #include "gc.h" 17 18 static struct proc_dir_entry *f2fs_proc_root; 19 20 /* Sysfs support for f2fs */ 21 enum { 22 GC_THREAD, /* struct f2fs_gc_thread */ 23 SM_INFO, /* struct f2fs_sm_info */ 24 DCC_INFO, /* struct discard_cmd_control */ 25 NM_INFO, /* struct f2fs_nm_info */ 26 F2FS_SBI, /* struct f2fs_sb_info */ 27 #ifdef CONFIG_F2FS_FAULT_INJECTION 28 FAULT_INFO_RATE, /* struct f2fs_fault_info */ 29 FAULT_INFO_TYPE, /* struct f2fs_fault_info */ 30 #endif 31 RESERVED_BLOCKS, /* struct f2fs_sb_info */ 32 }; 33 34 struct f2fs_attr { 35 struct attribute attr; 36 ssize_t (*show)(struct f2fs_attr *, struct f2fs_sb_info *, char *); 37 ssize_t (*store)(struct f2fs_attr *, struct f2fs_sb_info *, 38 const char *, size_t); 39 int struct_type; 40 int offset; 41 int id; 42 }; 43 44 static unsigned char *__struct_ptr(struct f2fs_sb_info *sbi, int struct_type) 45 { 46 if (struct_type == GC_THREAD) 47 return (unsigned char *)sbi->gc_thread; 48 else if (struct_type == SM_INFO) 49 return (unsigned char *)SM_I(sbi); 50 else if (struct_type == DCC_INFO) 51 return (unsigned char *)SM_I(sbi)->dcc_info; 52 else if (struct_type == NM_INFO) 53 return (unsigned char *)NM_I(sbi); 54 else if (struct_type == F2FS_SBI || struct_type == RESERVED_BLOCKS) 55 return (unsigned char *)sbi; 56 #ifdef CONFIG_F2FS_FAULT_INJECTION 57 else if (struct_type == FAULT_INFO_RATE || 58 struct_type == FAULT_INFO_TYPE) 59 return (unsigned char *)&F2FS_OPTION(sbi).fault_info; 60 #endif 61 return NULL; 62 } 63 64 static ssize_t dirty_segments_show(struct f2fs_attr *a, 65 struct f2fs_sb_info *sbi, char *buf) 66 { 67 return snprintf(buf, PAGE_SIZE, "%llu\n", 68 (unsigned long long)(dirty_segments(sbi))); 69 } 70 71 static ssize_t unusable_show(struct f2fs_attr *a, 72 struct f2fs_sb_info *sbi, char *buf) 73 { 74 block_t unusable; 75 76 if (test_opt(sbi, DISABLE_CHECKPOINT)) 77 unusable = sbi->unusable_block_count; 78 else 79 unusable = f2fs_get_unusable_blocks(sbi); 80 return snprintf(buf, PAGE_SIZE, "%llu\n", 81 (unsigned long long)unusable); 82 } 83 84 85 static ssize_t lifetime_write_kbytes_show(struct f2fs_attr *a, 86 struct f2fs_sb_info *sbi, char *buf) 87 { 88 struct super_block *sb = sbi->sb; 89 90 if (!sb->s_bdev->bd_part) 91 return snprintf(buf, PAGE_SIZE, "0\n"); 92 93 return snprintf(buf, PAGE_SIZE, "%llu\n", 94 (unsigned long long)(sbi->kbytes_written + 95 BD_PART_WRITTEN(sbi))); 96 } 97 98 static ssize_t features_show(struct f2fs_attr *a, 99 struct f2fs_sb_info *sbi, char *buf) 100 { 101 struct super_block *sb = sbi->sb; 102 int len = 0; 103 104 if (!sb->s_bdev->bd_part) 105 return snprintf(buf, PAGE_SIZE, "0\n"); 106 107 if (f2fs_sb_has_encrypt(sbi)) 108 len += snprintf(buf, PAGE_SIZE - len, "%s", 109 "encryption"); 110 if (f2fs_sb_has_blkzoned(sbi)) 111 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s", 112 len ? ", " : "", "blkzoned"); 113 if (f2fs_sb_has_extra_attr(sbi)) 114 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s", 115 len ? ", " : "", "extra_attr"); 116 if (f2fs_sb_has_project_quota(sbi)) 117 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s", 118 len ? ", " : "", "projquota"); 119 if (f2fs_sb_has_inode_chksum(sbi)) 120 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s", 121 len ? ", " : "", "inode_checksum"); 122 if (f2fs_sb_has_flexible_inline_xattr(sbi)) 123 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s", 124 len ? ", " : "", "flexible_inline_xattr"); 125 if (f2fs_sb_has_quota_ino(sbi)) 126 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s", 127 len ? ", " : "", "quota_ino"); 128 if (f2fs_sb_has_inode_crtime(sbi)) 129 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s", 130 len ? ", " : "", "inode_crtime"); 131 if (f2fs_sb_has_lost_found(sbi)) 132 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s", 133 len ? ", " : "", "lost_found"); 134 if (f2fs_sb_has_verity(sbi)) 135 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s", 136 len ? ", " : "", "verity"); 137 if (f2fs_sb_has_sb_chksum(sbi)) 138 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s", 139 len ? ", " : "", "sb_checksum"); 140 len += snprintf(buf + len, PAGE_SIZE - len, "\n"); 141 return len; 142 } 143 144 static ssize_t current_reserved_blocks_show(struct f2fs_attr *a, 145 struct f2fs_sb_info *sbi, char *buf) 146 { 147 return snprintf(buf, PAGE_SIZE, "%u\n", sbi->current_reserved_blocks); 148 } 149 150 static ssize_t f2fs_sbi_show(struct f2fs_attr *a, 151 struct f2fs_sb_info *sbi, char *buf) 152 { 153 unsigned char *ptr = NULL; 154 unsigned int *ui; 155 156 ptr = __struct_ptr(sbi, a->struct_type); 157 if (!ptr) 158 return -EINVAL; 159 160 if (!strcmp(a->attr.name, "extension_list")) { 161 __u8 (*extlist)[F2FS_EXTENSION_LEN] = 162 sbi->raw_super->extension_list; 163 int cold_count = le32_to_cpu(sbi->raw_super->extension_count); 164 int hot_count = sbi->raw_super->hot_ext_count; 165 int len = 0, i; 166 167 len += snprintf(buf + len, PAGE_SIZE - len, 168 "cold file extension:\n"); 169 for (i = 0; i < cold_count; i++) 170 len += snprintf(buf + len, PAGE_SIZE - len, "%s\n", 171 extlist[i]); 172 173 len += snprintf(buf + len, PAGE_SIZE - len, 174 "hot file extension:\n"); 175 for (i = cold_count; i < cold_count + hot_count; i++) 176 len += snprintf(buf + len, PAGE_SIZE - len, "%s\n", 177 extlist[i]); 178 return len; 179 } 180 181 ui = (unsigned int *)(ptr + a->offset); 182 183 return snprintf(buf, PAGE_SIZE, "%u\n", *ui); 184 } 185 186 static ssize_t __sbi_store(struct f2fs_attr *a, 187 struct f2fs_sb_info *sbi, 188 const char *buf, size_t count) 189 { 190 unsigned char *ptr; 191 unsigned long t; 192 unsigned int *ui; 193 ssize_t ret; 194 195 ptr = __struct_ptr(sbi, a->struct_type); 196 if (!ptr) 197 return -EINVAL; 198 199 if (!strcmp(a->attr.name, "extension_list")) { 200 const char *name = strim((char *)buf); 201 bool set = true, hot; 202 203 if (!strncmp(name, "[h]", 3)) 204 hot = true; 205 else if (!strncmp(name, "[c]", 3)) 206 hot = false; 207 else 208 return -EINVAL; 209 210 name += 3; 211 212 if (*name == '!') { 213 name++; 214 set = false; 215 } 216 217 if (strlen(name) >= F2FS_EXTENSION_LEN) 218 return -EINVAL; 219 220 down_write(&sbi->sb_lock); 221 222 ret = f2fs_update_extension_list(sbi, name, hot, set); 223 if (ret) 224 goto out; 225 226 ret = f2fs_commit_super(sbi, false); 227 if (ret) 228 f2fs_update_extension_list(sbi, name, hot, !set); 229 out: 230 up_write(&sbi->sb_lock); 231 return ret ? ret : count; 232 } 233 234 ui = (unsigned int *)(ptr + a->offset); 235 236 ret = kstrtoul(skip_spaces(buf), 0, &t); 237 if (ret < 0) 238 return ret; 239 #ifdef CONFIG_F2FS_FAULT_INJECTION 240 if (a->struct_type == FAULT_INFO_TYPE && t >= (1 << FAULT_MAX)) 241 return -EINVAL; 242 if (a->struct_type == FAULT_INFO_RATE && t >= UINT_MAX) 243 return -EINVAL; 244 #endif 245 if (a->struct_type == RESERVED_BLOCKS) { 246 spin_lock(&sbi->stat_lock); 247 if (t > (unsigned long)(sbi->user_block_count - 248 F2FS_OPTION(sbi).root_reserved_blocks)) { 249 spin_unlock(&sbi->stat_lock); 250 return -EINVAL; 251 } 252 *ui = t; 253 sbi->current_reserved_blocks = min(sbi->reserved_blocks, 254 sbi->user_block_count - valid_user_blocks(sbi)); 255 spin_unlock(&sbi->stat_lock); 256 return count; 257 } 258 259 if (!strcmp(a->attr.name, "discard_granularity")) { 260 if (t == 0 || t > MAX_PLIST_NUM) 261 return -EINVAL; 262 if (t == *ui) 263 return count; 264 *ui = t; 265 return count; 266 } 267 268 if (!strcmp(a->attr.name, "migration_granularity")) { 269 if (t == 0 || t > sbi->segs_per_sec) 270 return -EINVAL; 271 } 272 273 if (!strcmp(a->attr.name, "trim_sections")) 274 return -EINVAL; 275 276 if (!strcmp(a->attr.name, "gc_urgent")) { 277 if (t >= 1) { 278 sbi->gc_mode = GC_URGENT; 279 if (sbi->gc_thread) { 280 sbi->gc_thread->gc_wake = 1; 281 wake_up_interruptible_all( 282 &sbi->gc_thread->gc_wait_queue_head); 283 wake_up_discard_thread(sbi, true); 284 } 285 } else { 286 sbi->gc_mode = GC_NORMAL; 287 } 288 return count; 289 } 290 if (!strcmp(a->attr.name, "gc_idle")) { 291 if (t == GC_IDLE_CB) 292 sbi->gc_mode = GC_IDLE_CB; 293 else if (t == GC_IDLE_GREEDY) 294 sbi->gc_mode = GC_IDLE_GREEDY; 295 else 296 sbi->gc_mode = GC_NORMAL; 297 return count; 298 } 299 300 301 if (!strcmp(a->attr.name, "iostat_enable")) { 302 sbi->iostat_enable = !!t; 303 if (!sbi->iostat_enable) 304 f2fs_reset_iostat(sbi); 305 return count; 306 } 307 308 *ui = (unsigned int)t; 309 310 return count; 311 } 312 313 static ssize_t f2fs_sbi_store(struct f2fs_attr *a, 314 struct f2fs_sb_info *sbi, 315 const char *buf, size_t count) 316 { 317 ssize_t ret; 318 bool gc_entry = (!strcmp(a->attr.name, "gc_urgent") || 319 a->struct_type == GC_THREAD); 320 321 if (gc_entry) { 322 if (!down_read_trylock(&sbi->sb->s_umount)) 323 return -EAGAIN; 324 } 325 ret = __sbi_store(a, sbi, buf, count); 326 if (gc_entry) 327 up_read(&sbi->sb->s_umount); 328 329 return ret; 330 } 331 332 static ssize_t f2fs_attr_show(struct kobject *kobj, 333 struct attribute *attr, char *buf) 334 { 335 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 336 s_kobj); 337 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); 338 339 return a->show ? a->show(a, sbi, buf) : 0; 340 } 341 342 static ssize_t f2fs_attr_store(struct kobject *kobj, struct attribute *attr, 343 const char *buf, size_t len) 344 { 345 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 346 s_kobj); 347 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); 348 349 return a->store ? a->store(a, sbi, buf, len) : 0; 350 } 351 352 static void f2fs_sb_release(struct kobject *kobj) 353 { 354 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 355 s_kobj); 356 complete(&sbi->s_kobj_unregister); 357 } 358 359 enum feat_id { 360 FEAT_CRYPTO = 0, 361 FEAT_BLKZONED, 362 FEAT_ATOMIC_WRITE, 363 FEAT_EXTRA_ATTR, 364 FEAT_PROJECT_QUOTA, 365 FEAT_INODE_CHECKSUM, 366 FEAT_FLEXIBLE_INLINE_XATTR, 367 FEAT_QUOTA_INO, 368 FEAT_INODE_CRTIME, 369 FEAT_LOST_FOUND, 370 FEAT_VERITY, 371 FEAT_SB_CHECKSUM, 372 }; 373 374 static ssize_t f2fs_feature_show(struct f2fs_attr *a, 375 struct f2fs_sb_info *sbi, char *buf) 376 { 377 switch (a->id) { 378 case FEAT_CRYPTO: 379 case FEAT_BLKZONED: 380 case FEAT_ATOMIC_WRITE: 381 case FEAT_EXTRA_ATTR: 382 case FEAT_PROJECT_QUOTA: 383 case FEAT_INODE_CHECKSUM: 384 case FEAT_FLEXIBLE_INLINE_XATTR: 385 case FEAT_QUOTA_INO: 386 case FEAT_INODE_CRTIME: 387 case FEAT_LOST_FOUND: 388 case FEAT_VERITY: 389 case FEAT_SB_CHECKSUM: 390 return snprintf(buf, PAGE_SIZE, "supported\n"); 391 } 392 return 0; 393 } 394 395 #define F2FS_ATTR_OFFSET(_struct_type, _name, _mode, _show, _store, _offset) \ 396 static struct f2fs_attr f2fs_attr_##_name = { \ 397 .attr = {.name = __stringify(_name), .mode = _mode }, \ 398 .show = _show, \ 399 .store = _store, \ 400 .struct_type = _struct_type, \ 401 .offset = _offset \ 402 } 403 404 #define F2FS_RW_ATTR(struct_type, struct_name, name, elname) \ 405 F2FS_ATTR_OFFSET(struct_type, name, 0644, \ 406 f2fs_sbi_show, f2fs_sbi_store, \ 407 offsetof(struct struct_name, elname)) 408 409 #define F2FS_GENERAL_RO_ATTR(name) \ 410 static struct f2fs_attr f2fs_attr_##name = __ATTR(name, 0444, name##_show, NULL) 411 412 #define F2FS_FEATURE_RO_ATTR(_name, _id) \ 413 static struct f2fs_attr f2fs_attr_##_name = { \ 414 .attr = {.name = __stringify(_name), .mode = 0444 }, \ 415 .show = f2fs_feature_show, \ 416 .id = _id, \ 417 } 418 419 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_urgent_sleep_time, 420 urgent_sleep_time); 421 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_min_sleep_time, min_sleep_time); 422 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_max_sleep_time, max_sleep_time); 423 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_no_gc_sleep_time, no_gc_sleep_time); 424 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_idle, gc_mode); 425 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_urgent, gc_mode); 426 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, reclaim_segments, rec_prefree_segments); 427 F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, max_small_discards, max_discards); 428 F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, discard_granularity, discard_granularity); 429 F2FS_RW_ATTR(RESERVED_BLOCKS, f2fs_sb_info, reserved_blocks, reserved_blocks); 430 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, batched_trim_sections, trim_sections); 431 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, ipu_policy, ipu_policy); 432 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_ipu_util, min_ipu_util); 433 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_fsync_blocks, min_fsync_blocks); 434 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_seq_blocks, min_seq_blocks); 435 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_hot_blocks, min_hot_blocks); 436 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_ssr_sections, min_ssr_sections); 437 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ram_thresh, ram_thresh); 438 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ra_nid_pages, ra_nid_pages); 439 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, dirty_nats_ratio, dirty_nats_ratio); 440 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, max_victim_search, max_victim_search); 441 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, migration_granularity, migration_granularity); 442 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, dir_level, dir_level); 443 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, cp_interval, interval_time[CP_TIME]); 444 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, idle_interval, interval_time[REQ_TIME]); 445 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, discard_idle_interval, 446 interval_time[DISCARD_TIME]); 447 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_idle_interval, interval_time[GC_TIME]); 448 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, 449 umount_discard_timeout, interval_time[UMOUNT_DISCARD_TIMEOUT]); 450 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, iostat_enable, iostat_enable); 451 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, readdir_ra, readdir_ra); 452 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_pin_file_thresh, gc_pin_file_threshold); 453 F2FS_RW_ATTR(F2FS_SBI, f2fs_super_block, extension_list, extension_list); 454 #ifdef CONFIG_F2FS_FAULT_INJECTION 455 F2FS_RW_ATTR(FAULT_INFO_RATE, f2fs_fault_info, inject_rate, inject_rate); 456 F2FS_RW_ATTR(FAULT_INFO_TYPE, f2fs_fault_info, inject_type, inject_type); 457 #endif 458 F2FS_GENERAL_RO_ATTR(dirty_segments); 459 F2FS_GENERAL_RO_ATTR(lifetime_write_kbytes); 460 F2FS_GENERAL_RO_ATTR(features); 461 F2FS_GENERAL_RO_ATTR(current_reserved_blocks); 462 F2FS_GENERAL_RO_ATTR(unusable); 463 464 #ifdef CONFIG_FS_ENCRYPTION 465 F2FS_FEATURE_RO_ATTR(encryption, FEAT_CRYPTO); 466 #endif 467 #ifdef CONFIG_BLK_DEV_ZONED 468 F2FS_FEATURE_RO_ATTR(block_zoned, FEAT_BLKZONED); 469 #endif 470 F2FS_FEATURE_RO_ATTR(atomic_write, FEAT_ATOMIC_WRITE); 471 F2FS_FEATURE_RO_ATTR(extra_attr, FEAT_EXTRA_ATTR); 472 F2FS_FEATURE_RO_ATTR(project_quota, FEAT_PROJECT_QUOTA); 473 F2FS_FEATURE_RO_ATTR(inode_checksum, FEAT_INODE_CHECKSUM); 474 F2FS_FEATURE_RO_ATTR(flexible_inline_xattr, FEAT_FLEXIBLE_INLINE_XATTR); 475 F2FS_FEATURE_RO_ATTR(quota_ino, FEAT_QUOTA_INO); 476 F2FS_FEATURE_RO_ATTR(inode_crtime, FEAT_INODE_CRTIME); 477 F2FS_FEATURE_RO_ATTR(lost_found, FEAT_LOST_FOUND); 478 #ifdef CONFIG_FS_VERITY 479 F2FS_FEATURE_RO_ATTR(verity, FEAT_VERITY); 480 #endif 481 F2FS_FEATURE_RO_ATTR(sb_checksum, FEAT_SB_CHECKSUM); 482 483 #define ATTR_LIST(name) (&f2fs_attr_##name.attr) 484 static struct attribute *f2fs_attrs[] = { 485 ATTR_LIST(gc_urgent_sleep_time), 486 ATTR_LIST(gc_min_sleep_time), 487 ATTR_LIST(gc_max_sleep_time), 488 ATTR_LIST(gc_no_gc_sleep_time), 489 ATTR_LIST(gc_idle), 490 ATTR_LIST(gc_urgent), 491 ATTR_LIST(reclaim_segments), 492 ATTR_LIST(max_small_discards), 493 ATTR_LIST(discard_granularity), 494 ATTR_LIST(batched_trim_sections), 495 ATTR_LIST(ipu_policy), 496 ATTR_LIST(min_ipu_util), 497 ATTR_LIST(min_fsync_blocks), 498 ATTR_LIST(min_seq_blocks), 499 ATTR_LIST(min_hot_blocks), 500 ATTR_LIST(min_ssr_sections), 501 ATTR_LIST(max_victim_search), 502 ATTR_LIST(migration_granularity), 503 ATTR_LIST(dir_level), 504 ATTR_LIST(ram_thresh), 505 ATTR_LIST(ra_nid_pages), 506 ATTR_LIST(dirty_nats_ratio), 507 ATTR_LIST(cp_interval), 508 ATTR_LIST(idle_interval), 509 ATTR_LIST(discard_idle_interval), 510 ATTR_LIST(gc_idle_interval), 511 ATTR_LIST(umount_discard_timeout), 512 ATTR_LIST(iostat_enable), 513 ATTR_LIST(readdir_ra), 514 ATTR_LIST(gc_pin_file_thresh), 515 ATTR_LIST(extension_list), 516 #ifdef CONFIG_F2FS_FAULT_INJECTION 517 ATTR_LIST(inject_rate), 518 ATTR_LIST(inject_type), 519 #endif 520 ATTR_LIST(dirty_segments), 521 ATTR_LIST(unusable), 522 ATTR_LIST(lifetime_write_kbytes), 523 ATTR_LIST(features), 524 ATTR_LIST(reserved_blocks), 525 ATTR_LIST(current_reserved_blocks), 526 NULL, 527 }; 528 ATTRIBUTE_GROUPS(f2fs); 529 530 static struct attribute *f2fs_feat_attrs[] = { 531 #ifdef CONFIG_FS_ENCRYPTION 532 ATTR_LIST(encryption), 533 #endif 534 #ifdef CONFIG_BLK_DEV_ZONED 535 ATTR_LIST(block_zoned), 536 #endif 537 ATTR_LIST(atomic_write), 538 ATTR_LIST(extra_attr), 539 ATTR_LIST(project_quota), 540 ATTR_LIST(inode_checksum), 541 ATTR_LIST(flexible_inline_xattr), 542 ATTR_LIST(quota_ino), 543 ATTR_LIST(inode_crtime), 544 ATTR_LIST(lost_found), 545 #ifdef CONFIG_FS_VERITY 546 ATTR_LIST(verity), 547 #endif 548 ATTR_LIST(sb_checksum), 549 NULL, 550 }; 551 ATTRIBUTE_GROUPS(f2fs_feat); 552 553 static const struct sysfs_ops f2fs_attr_ops = { 554 .show = f2fs_attr_show, 555 .store = f2fs_attr_store, 556 }; 557 558 static struct kobj_type f2fs_sb_ktype = { 559 .default_groups = f2fs_groups, 560 .sysfs_ops = &f2fs_attr_ops, 561 .release = f2fs_sb_release, 562 }; 563 564 static struct kobj_type f2fs_ktype = { 565 .sysfs_ops = &f2fs_attr_ops, 566 }; 567 568 static struct kset f2fs_kset = { 569 .kobj = {.ktype = &f2fs_ktype}, 570 }; 571 572 static struct kobj_type f2fs_feat_ktype = { 573 .default_groups = f2fs_feat_groups, 574 .sysfs_ops = &f2fs_attr_ops, 575 }; 576 577 static struct kobject f2fs_feat = { 578 .kset = &f2fs_kset, 579 }; 580 581 static int __maybe_unused segment_info_seq_show(struct seq_file *seq, 582 void *offset) 583 { 584 struct super_block *sb = seq->private; 585 struct f2fs_sb_info *sbi = F2FS_SB(sb); 586 unsigned int total_segs = 587 le32_to_cpu(sbi->raw_super->segment_count_main); 588 int i; 589 590 seq_puts(seq, "format: segment_type|valid_blocks\n" 591 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n"); 592 593 for (i = 0; i < total_segs; i++) { 594 struct seg_entry *se = get_seg_entry(sbi, i); 595 596 if ((i % 10) == 0) 597 seq_printf(seq, "%-10d", i); 598 seq_printf(seq, "%d|%-3u", se->type, se->valid_blocks); 599 if ((i % 10) == 9 || i == (total_segs - 1)) 600 seq_putc(seq, '\n'); 601 else 602 seq_putc(seq, ' '); 603 } 604 605 return 0; 606 } 607 608 static int __maybe_unused segment_bits_seq_show(struct seq_file *seq, 609 void *offset) 610 { 611 struct super_block *sb = seq->private; 612 struct f2fs_sb_info *sbi = F2FS_SB(sb); 613 unsigned int total_segs = 614 le32_to_cpu(sbi->raw_super->segment_count_main); 615 int i, j; 616 617 seq_puts(seq, "format: segment_type|valid_blocks|bitmaps\n" 618 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n"); 619 620 for (i = 0; i < total_segs; i++) { 621 struct seg_entry *se = get_seg_entry(sbi, i); 622 623 seq_printf(seq, "%-10d", i); 624 seq_printf(seq, "%d|%-3u|", se->type, se->valid_blocks); 625 for (j = 0; j < SIT_VBLOCK_MAP_SIZE; j++) 626 seq_printf(seq, " %.2x", se->cur_valid_map[j]); 627 seq_putc(seq, '\n'); 628 } 629 return 0; 630 } 631 632 static int __maybe_unused iostat_info_seq_show(struct seq_file *seq, 633 void *offset) 634 { 635 struct super_block *sb = seq->private; 636 struct f2fs_sb_info *sbi = F2FS_SB(sb); 637 time64_t now = ktime_get_real_seconds(); 638 639 if (!sbi->iostat_enable) 640 return 0; 641 642 seq_printf(seq, "time: %-16llu\n", now); 643 644 /* print app IOs */ 645 seq_printf(seq, "app buffered: %-16llu\n", 646 sbi->write_iostat[APP_BUFFERED_IO]); 647 seq_printf(seq, "app direct: %-16llu\n", 648 sbi->write_iostat[APP_DIRECT_IO]); 649 seq_printf(seq, "app mapped: %-16llu\n", 650 sbi->write_iostat[APP_MAPPED_IO]); 651 652 /* print fs IOs */ 653 seq_printf(seq, "fs data: %-16llu\n", 654 sbi->write_iostat[FS_DATA_IO]); 655 seq_printf(seq, "fs node: %-16llu\n", 656 sbi->write_iostat[FS_NODE_IO]); 657 seq_printf(seq, "fs meta: %-16llu\n", 658 sbi->write_iostat[FS_META_IO]); 659 seq_printf(seq, "fs gc data: %-16llu\n", 660 sbi->write_iostat[FS_GC_DATA_IO]); 661 seq_printf(seq, "fs gc node: %-16llu\n", 662 sbi->write_iostat[FS_GC_NODE_IO]); 663 seq_printf(seq, "fs cp data: %-16llu\n", 664 sbi->write_iostat[FS_CP_DATA_IO]); 665 seq_printf(seq, "fs cp node: %-16llu\n", 666 sbi->write_iostat[FS_CP_NODE_IO]); 667 seq_printf(seq, "fs cp meta: %-16llu\n", 668 sbi->write_iostat[FS_CP_META_IO]); 669 seq_printf(seq, "fs discard: %-16llu\n", 670 sbi->write_iostat[FS_DISCARD]); 671 672 return 0; 673 } 674 675 static int __maybe_unused victim_bits_seq_show(struct seq_file *seq, 676 void *offset) 677 { 678 struct super_block *sb = seq->private; 679 struct f2fs_sb_info *sbi = F2FS_SB(sb); 680 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); 681 int i; 682 683 seq_puts(seq, "format: victim_secmap bitmaps\n"); 684 685 for (i = 0; i < MAIN_SECS(sbi); i++) { 686 if ((i % 10) == 0) 687 seq_printf(seq, "%-10d", i); 688 seq_printf(seq, "%d", test_bit(i, dirty_i->victim_secmap) ? 1 : 0); 689 if ((i % 10) == 9 || i == (MAIN_SECS(sbi) - 1)) 690 seq_putc(seq, '\n'); 691 else 692 seq_putc(seq, ' '); 693 } 694 return 0; 695 } 696 697 int __init f2fs_init_sysfs(void) 698 { 699 int ret; 700 701 kobject_set_name(&f2fs_kset.kobj, "f2fs"); 702 f2fs_kset.kobj.parent = fs_kobj; 703 ret = kset_register(&f2fs_kset); 704 if (ret) 705 return ret; 706 707 ret = kobject_init_and_add(&f2fs_feat, &f2fs_feat_ktype, 708 NULL, "features"); 709 if (ret) 710 kset_unregister(&f2fs_kset); 711 else 712 f2fs_proc_root = proc_mkdir("fs/f2fs", NULL); 713 return ret; 714 } 715 716 void f2fs_exit_sysfs(void) 717 { 718 kobject_put(&f2fs_feat); 719 kset_unregister(&f2fs_kset); 720 remove_proc_entry("fs/f2fs", NULL); 721 f2fs_proc_root = NULL; 722 } 723 724 int f2fs_register_sysfs(struct f2fs_sb_info *sbi) 725 { 726 struct super_block *sb = sbi->sb; 727 int err; 728 729 sbi->s_kobj.kset = &f2fs_kset; 730 init_completion(&sbi->s_kobj_unregister); 731 err = kobject_init_and_add(&sbi->s_kobj, &f2fs_sb_ktype, NULL, 732 "%s", sb->s_id); 733 if (err) 734 return err; 735 736 if (f2fs_proc_root) 737 sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root); 738 739 if (sbi->s_proc) { 740 proc_create_single_data("segment_info", S_IRUGO, sbi->s_proc, 741 segment_info_seq_show, sb); 742 proc_create_single_data("segment_bits", S_IRUGO, sbi->s_proc, 743 segment_bits_seq_show, sb); 744 proc_create_single_data("iostat_info", S_IRUGO, sbi->s_proc, 745 iostat_info_seq_show, sb); 746 proc_create_single_data("victim_bits", S_IRUGO, sbi->s_proc, 747 victim_bits_seq_show, sb); 748 } 749 return 0; 750 } 751 752 void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi) 753 { 754 if (sbi->s_proc) { 755 remove_proc_entry("iostat_info", sbi->s_proc); 756 remove_proc_entry("segment_info", sbi->s_proc); 757 remove_proc_entry("segment_bits", sbi->s_proc); 758 remove_proc_entry("victim_bits", sbi->s_proc); 759 remove_proc_entry(sbi->sb->s_id, f2fs_proc_root); 760 } 761 kobject_del(&sbi->s_kobj); 762 } 763